Answer:
NO SOLUTION
Step-by-step explanation:
Let's actually solve the system
x-4y=1
5x-20y=4
Let's eliminate y. To do this, multiply the first equation by -5, obtaining
-5x + 20y = -5
Now add this result to the second equation:
-5x + 20y = -5
5x - 20y = 4
--------------------
0 = -1
This result is never true. Thus, this system of linear equations has NO SOLUTION.
Answer:
Question (a): $42
Question (b): $63
Step-by-step explanation:
Let's assume that X= Jeans, Y= Shirts
3x+5y= 441{ total cost of outfits bought) and from the second statement,each pair of Jean costs 2/3 of each shirt.(x=2/3×y). Substitute the second equation into the first one.
3(2/3×y)+5y=441
6y/3+5y=441
2y+5y=441
Y= 63(price of each shirt)
Substitute Y=63 in the second equation.
(X= 2/3×63)= 42(price of each pair of jeans)
This is a problem in statistics that makes use of permutation. permutation is used since order or arrangement is significant in counting down the number of ways. this is different from combination which doesn't make use of order. In this case, the formula is 8P6 from nPr which is equal to 20160 ways,
Can be written as
w +2.3 > 18